GX 9+9: Variability of the X-Ray Orbital Modulation
Results of observations of the Galactic bulge X-ray source GX 9+9 by the All-Sky Monitor (ASM) and Proportional Counter Array (PCA) onboard the Rossi X-ray...
Gyro-viscosity and linear dispersion relations in pair-ion magnetized plasmas
A fluid theory has been developed by taking account of gyro-viscosity to study wave propagation characteristics in a homogeneous pair-ion magnetized plasma with...
Very Large Array7 neutral hydrogen observations of the shell elliptical galaxy NGC 3656 reveal an edge-on, warped minor-axis gaseous disk (MHI~2×109 Msolar)...
H II emission line region in LEDA 212995, a small neighboring galaxy of Mrk 1040
We present here new spectroscopic observations of Mrk 1040 and LEDA 212995 (Mrk 1040 companion) obtained with the Isaac Newton Telescope (INT). The intensity...
H II Region Population in a Sample of Nearby Galaxies with Nuclear Activity. I. Data and General Results
This paper presents the distribution of ionized gas in the disk and circumnuclear region of a sample of 55 galaxies with active nuclei, Seyfert galaxies of type...
H II Region Population in a Sample of Nearby Galaxies with Nuclear Activity. II. Luminosity Function, Size, and Radial Distributions
This paper presents the second part of an extensive study of the properties of the H II region population in a sample of spiral galaxies with active nucleus...
H II region spectroscopy and two dimensional stellar photometry of the barred Seyfert NGC 1566
Radial velocities of 14 H II regions were obtained using reticon spectroscopy at H-alpha for the barred spiral NGC 1566. The same spectra also yield N II/H and...
CCD narrow-band H-alpha photometry of the Sextans A Local Group dwarf irregular galaxy is presented. Fourteen H II regions have been recorded. Their...
H II Regions Within a Compact High Velocity Cloud. A Nearly Starless Dwarf Galaxy?
Within the SECCO survey we identified a candidate stellar counterpart to the Ultra Compact High Velocity Cloud (UCHVC) HVC274.68+74.70-123 that was suggested by...